- From: Jarno van Driel <jarnovandriel@gmail.com>
- Date: Wed, 4 Jun 2014 15:16:22 +0200
- To: "martin.hepp@ebusiness-unibw.org" <martin.hepp@ebusiness-unibw.org>
- Cc: W3C Web Schemas Task Force <public-vocabs@w3.org>
- Message-ID: <CADK2AU1LcHOe9LxqtUKSxBzGAN_9R-qUjEdNt+zPwTuWCxn0Mg@mail.gmail.com>
Clear, got it. The only thing I seem to be unable to wrap my head around still, is why does http://schema.org/Service exist and when would one use it? Because if a http://schema.org/Product = 'Any offered product or service' than why arent' http://schema.org/Product & http://schema.org/Service one entity? (like in Goodrelations) Currently both Product and Service can be used to describe a service, which just doesn't make sense to me and which schema.org doesn't clarify either. 2014-06-04 14:23 GMT+02:00 martin.hepp@ebusiness-unibw.org < martin.hepp@ebusiness-unibw.org>: > > ...schema:Product is not disjoint with any other type, so you can also > offer a company, a place, a CreativeWork, etc. > > > >Wait a minute - "any other type"? @itemOffered has an expected value of > Product. Isn't for example <div itemprop="itemOffered" itemscope itemtype=" > http://schema.org/Event">...</div> therefor a wrong >notation? > > That depends on the syntax, unfortunately: > > In an RDF syntax and with a RDFS reasoner present, when using an entity of > type schema:Event with the property schema:itemOffered, the client will > assume that the entity is also a schema:Product (actually, it will not with > the standard representation of schema.org from > > http://schema.org/docs/schema_org_rdfa.html > > because there, domain and range are encoded via > > > http://schema.org/domainIncludes > http://schema.org/rangeIncludes > > instead of rdfs:range and rdfs:domain, but with the versions from > > http://topbraid.org/schema/ > http://schema.rdfs.org/ > > the inferences will be drawn). > > In Microdata, however, you must declare the entity to be a schema:Event > and schema:Product in order to be able to use the respective properties on > the entity. > > This is the theory and does not say anything about how well this works > with popular search engines. > > In general, I would hope that the major search engines can handle these > patterns if the entity is explicitly set to be multi-type. > > > Best wishes / Mit freundlichen Grüßen > > Martin Hepp > > ------------------------------------------------------- > martin hepp > e-business & web science research group > universitaet der bundeswehr muenchen > > e-mail: martin.hepp@unibw.de > phone: +49-(0)89-6004-4217 > fax: +49-(0)89-6004-4620 > www: http://www.unibw.de/ebusiness/ (group) > http://www.heppnetz.de/ (personal) > skype: mfhepp > twitter: mfhepp > > Check out GoodRelations for E-Commerce on the Web of Linked Data! > ================================================================= > * Project Main Page: http://purl.org/goodrelations/ > > > > > On 04 Jun 2014, at 01:45, Jarno van Driel <jarnovandriel@gmail.com> wrote: > > > ...schema:Product is not disjoint with any other type, so you can also > offer a company, a place, a CreativeWork, etc. > > > > Wait a minute - "any other type"? @itemOffered has an expected value of > Product. Isn't for example <div itemprop="itemOffered" itemscope itemtype=" > http://schema.org/Event">...</div> therefor a wrong notation? > > > > > > 2014-06-04 0:07 GMT+02:00 Jarno van Driel <jarnovandriel@gmail.com>: > > Thanks for explaining Martin, most is clear to me except when to use the > Service entity by itself. > > Because if 'Any offered product or service' = ProductOrService then when > would one choose to use just the Service type; only in non-commercial cases? > > > > > > > > 2014-06-03 19:14 GMT+02:00 <martin.hepp@ebusiness-unibw.org>: > > > > > > On 03 Jun 2014, at 11:25, Jarno van Driel <jarnovandriel@gmail.com> > wrote: > > > > > After reading the description of http://schema.org/Product I got a > bit confused. It says: > > > "Any offered product or *service*. For example: a pair of shoes; a > concert ticket; *the rental of a car*; *a haircut*; or an episode of a TV > show streamed online." > > > > > As for rental etc. of physical products: This is straightforward, since > the bundle of rights offered by the offer is defined by the > gr/schema:BusinessFunction. When you rent a car, you just obtain temporary > usage etc. See the definitions at > > > > http://www.heppnetz.de/ontologies/goodrelations/v1.html#BusinessFunction > > > > • gr:ConstructionInstallation > > • gr:Dispose > > • gr:LeaseOut > > • gr:Maintain > > • gr:ProvideService > > • gr:Repair > > • gr:Sell > > • gr:Buy > > > > > > > The 'service' mentioned made twitch a bit since I thought we have > http://schema.org/Service for this. Now I looked up ProductOrService on > the Goodrelations site ( > http://wiki.goodrelations-vocabulary.org/Documentation/Product_or_Service) > and this page mentions 3 types of Product entities specifically but doesn't > mention Service. > > > > schema:Product is equivalent to gr:ProductOrService. The reason for the > naming difference is that schema:Product existed before GR was integrated. > > > > The subtypes of schema:Product / gr:ProductOrService are for indicating > more precisely whether you are talking of > > > > - a concrete individual (e.g. a car with a VIN, a computer with a serial > number, ...) > > - a bag of anonymous products (a bit complicated to explain, I admit) and > > - a product model, essentially a datasheet that defines properties for > actualy products. > > > > > > > > So if it's true that Product also can mean a service, than in which > case is one supposed to use Service? > > > > In essence, being a product is a role that a thing can take by being the > object of an offer. schema:Product is not disjoint with any other type, so > you can also offer a company, a place, a CreativeWork, etc. > > > > > > > > And if a Product also can be a Service, would one then only use a > Multiple-Type-Entity like 'Product Service' when the Product needs > properties that are part of Service (or inversed)? > > > > If you need properties from another type for describing the product, > then a multi-typed entity is the proper way of modeling, yes. > > > > Martin > > > > > > > > -- > > > Jarno van Driel > > > Technical & Semantic SEO Consultant > > > 8 Digits - Digital Marketing Technologies > > > > > > Tel: +31 652 847 608 > > > Google+: https://plus.google.com/u/0/+JarnovanDriel > > > Linkedin: linkedin.com/pub/jarno-van-driel/75/470/36a/ > > > > > > > > > > -- > > Jarno van Driel > > Technical & Semantic SEO Consultant > > 8 Digits - Digital Marketing Technologies > > > > Tel: +31 652 847 608 > > Google+: https://plus.google.com/u/0/+JarnovanDriel > > Linkedin: linkedin.com/pub/jarno-van-driel/75/470/36a/ > > > > > > > > -- > > Jarno van Driel > > Technical & Semantic SEO Consultant > > 8 Digits - Digital Marketing Technologies > > > > Tel: +31 652 847 608 > > Google+: https://plus.google.com/u/0/+JarnovanDriel > > Linkedin: linkedin.com/pub/jarno-van-driel/75/470/36a/ > > -- *Jarno van Driel* Technical & Semantic SEO Consultant 8 Digits - Digital Marketing Technologies Tel: +31 652 847 608 Google+: https://plus.google.com/u/0/+JarnovanDriel Linkedin: linkedin.com/pub/jarno-van-driel/75/470/36a/
Received on Wednesday, 4 June 2014 13:16:50 UTC